191129004900 has 54 divisors (see below), whose sum is σ = 599083250402. Its totient is φ = 50967734400.

The previous prime is 191129004887. The next prime is 191129004977. The reversal of 191129004900 is 9400921191.

It can be written as a sum of positive squares in 3 ways, for example, as 7170363684 + 183958641216 = 84678^2 + 428904^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 106181881 + ... + 106183680.

Almost surely, 2^191129004900 is an apocalyptic number.

191129004900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191129004900 is an abundant number, since it is smaller than the sum of its proper divisors (407954245502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191129004900 is a wasteful number, since it uses less digits than its factorization.

191129004900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212365581 (or 212365571 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 191129004900 in words is "one hundred ninety-one billion, one hundred twenty-nine million, four thousand, nine hundred".